Cheer tryout advice

Ok hi I’m new here but I need some advice, so I’m 17 and going into my senior year of hs next year and I wanted to tryout for my school cheer team as I had som friends who suggested I join. I have had cheer experience in the past aka pre covid- covid. and I can still do the skills like a cartwheel, roundoff ect. But since I’m a senior I wanna make varisty (ik kinda unrealistic) I have been taking tumbling classes to get my backhandspring because that’s the skill I left off on before I quit cheer and I heard it’s a good skill to help you make varsity. I also have been working on my jumps. Now tryouts are a couple weeks away and I still haven’t gotten my backhandspring but I’m not gonna give up. if I don’t get it in time what are some things that can help me stand out at tryouts. I really wanna make the team and willing to take all the advice!!!